DIY TetherSprout: Urethral sounding, stretching and lock

Inspired by a crazy invention called "TetherSprout" which uses discs and a sprout to lock itself in the wider part of the urethra after the meatus called "fossa navicularis".
This cave inside the glans is a lot wider than the urethral opening. So if you... Inspired by a crazy invention called "TetherSprout" which uses discs and a sprout to lock itself in the wider part of the urethra after the meatus called "fossa navicularis".
This cave inside the glans is a lot wider than the urethral opening. So if you spread something in there, you can no longer pull it out. Great for stretching your dick. This should also work with an inflatable catheter.
The urethral inserts were made from q-tips and hot glue. I found the L-shaped inserts worked best.